Rational Design and Strain Engineering of Nanoporous Boron Nitride Nanosheet Membranes for Water Desalination

Gao, Haiqi; Qiu, Shi; Rao, Dewei; Zhang, Yadong; Su, Jiaye; Liu, Yuzhen; Wang, Yunhui; Deng, Kaiming; Lu, Ruifeng

doi:10.1021/acs.jpcc.7b06480

Cited by 109 publications

(99 citation statements)

References 83 publications

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“…These properties suggest that BN would be an excellent functional material for membrane development. Latest theoretical investigations also suggest that free-standing atomically thin BN membranes could efficiently reject heavy metal ions and salts for seawater desalination [13, 14].…”

Section: Introductionmentioning

confidence: 99%

Water transport properties of boron nitride nanosheets mixed matrix membranes for humic acid removal

Tang

Zulhairun

Wong

et al. 2019

Heliyon

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Ultrafiltration grade polysulfone-based mixed matrix membranes (MMMs) incorporated with two-dimensional boron nitride nanosheet (BNNS) was prepared via phase inversion method. The amount of BN incorporated was varied and the influence on membrane morphology, contact angle, surface charge, as well as water permeability and humic acid rejection were investigated. Results revealed that the addition of BN to the membrane matrix resulted in profound increase in water permeability (almost tripled to that of neat PSf) and humic acid rejection due to the increase in pore size and surface negative charge. Beyond the morphological changes imparted by the inclusion of BNNS, we postulated that the presence of BNNS within the membrane matrix also contribute to the enhancement in flux and rejection based on surface-slip and selective interlayer transport. Despite the favourable augmentation of water transport and filtration performance, the MMMs suffered with fouling problem due to the entrapment of foulant within the enlarged pores and the membrane valleys. Its inherent adsorptive character could be a disadvantage when utilized as membrane filler.

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Section: Introductionmentioning

confidence: 99%

Water transport properties of boron nitride nanosheets mixed matrix membranes for humic acid removal

Tang

Zulhairun

Wong

et al. 2019

Heliyon

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“…Water molecules (TIP3P model [ 27 ] ), ions, hydrogen group, and graphene sheet were described by the CHARMM general force field. The Lennard‐Jones parameters for B and N atoms were evaluated from literature, [ 28 ] using MP2/6‐31G level of theory to determine partial charges of functionalized BNNTs. The systems were simulated at a temperature of 300 K with a Langevin dynamics, a damping constant of 0.1 ps −1 and a time step of 2 fs in an NVT ensemble, with periodic boundary conditions imposed in all three directions.…”

Section: Methodsmentioning

confidence: 99%

Highly Efficient Osmotic Energy Harvesting in Charged Boron‐Nitride‐Nanopore Membranes

Pendse

Cetindag

Řehák

et al. 2021

Adv Funct Materials

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Recent studies of the high energy‐conversion efficiency of the nanofluidic platform have revealed the enormous potential for efficient exploitation of electrokinetic phenomena in nanoporous membranes for clean‐energy harvesting from salinity gradients. Here, nanofluidic reverse electrodialysis (NF‐RED) consisting of vertically aligned boron‐nitride‐nanopore (VA‐BNNP) membranes is presented, which can efficiently harness osmotic power. The power density of the VA‐BNNP reaches up to 105 W m−2, which is several orders of magnitude higher than in other nanopores with similar pore sizes, leading to 165 mW m−2 of net power density (i.e., power per membrane area). Low‐pressure chemical vapor deposition technology is employed to uniformly deposit a thin BN layer within 1D anodized alumina pores to prepare a macroscopic VA‐BNNP membrane with a high nanopore density, ≈108 pores cm−2. These membranes can resolve fundamental questions regarding the ion mobility, liquid transport, and power generation in highly charged nanopores. It is shown that the transference number in the VA‐BNNP is almost constant over the entire salt concentration range, which is different from other nanopore systems. Moreover, it is also demonstrated that the BN deposition on the nanopore channels can significantly enhance the diffusio‐osmosis velocity by two orders of magnitude at a high salinity gradient, resulting in a huge increase in power density.

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“…[43,44] Due to the similar structure to graphene, h-BN is expected to have an extremely high value in the field of water treatment, which is supported by many studies. [45][46][47][48] MXene materials are transition metal carbides, nitrides, and carbonitrides, with a general chemical formula of M n+1 X n (or M n+1 X n T x ), where M, X, and T represent early transition metals, carbon and/or nitrogen, and surface functionalities added through etching (e.g., -O, -F, or -OH), respectively. [49,50] The latest review by Karahan et al [51] thoroughly discussed the preparation and physicochemical characteristics of MXene and introduced the applications of this material in the field of membrane-based separation.…”

Section: D Materials In Tfn Membranesmentioning

confidence: 99%

2D Material Based Thin‐Film Nanocomposite Membranes for Water Treatment

Yang

Wang

et al. 2021

Adv Materials Technologies

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TFC membranes are fabricated via an interfacial polymerization (IP) process involving two monomers: an amine such as m-phenylenediamine (MPD), piperazine (PIP) and phenylenediamine (PPD) dissolved in an aqueous solution; and a polyfunctional acid chloride such as trimesoyl chloride (TMC) dissolved in an organic solvent. [11] As shown in Figure 1a, a common configuration of TFC membranes includes: 1) a top ultrathin skin polyamide (PA) layer (200 nm) which controls the separation performance; 2) a middle porous support layer (60 µm) which provides the necessary mechanical support and functions as a platform for IP process; and 3) a bottom nonwoven fabric layer (100 µm) which gives further mechanical support. [12] With the advantages of this structure, TFC membranes can achieve efficient separation while maintaining mechanical strength.Despite its wide applications, TFC membranes are still facing many challenges, particularly, the trade-off between the water permeability and the solute rejection in PA films. [13] The latest review in 2019 presented a more accurate upper bound of polymer TFC membranes through analyzing more than 300 TFC-related studies, as shown in Figure 1b. [14] Based on the solution-diffusion mechanism of the TFC membranes, an increase of water permeance would inevitably lead to a decrease of solute rejection. There is an ultimate limit for the development of traditional polymer TFC membranes. Moreover, membrane fouling and chlorination pose constant challenges in the application of polymer TFC membranes. However, the demand for freshwater in human society seems bottomless, and thus high-performance TFC membranes are required.Integrating nanomaterials into the polymer TFC membranes to form TFN membranes has been identified as a promising technique to solve the drawbacks of TFC membranes. In 2007, Hoek and co-workers [15] originally developed a thinfilm nanocomposite (TFN) membrane by adding NaA zeolite into the PA matrix. Afterward, various advanced nanomaterials, carbon nanotubes, [16,17] zeolite, [15][16][17][18][19] inorganic nanoparticles, [20,21] zeolitic imidazolate framework, [22,23] metal-organic framework, [24] and so on have been incorporated with TFC membranes. Particularly, the 2D forms of these nanomaterials are believed to be excellent candidates for fabricating high-performance TFN membranes. This work is to make an exhaustive examination of current research on 2D materials Membrane-based separation technologies are essential in the fields of desalination and wastewater treatment. 2D material based thin-film nanocomposite (2D-M-TFN) membranes are emerging technology that combines 2D nanomaterials and conventional thin-film composite membranes. It has great potential to further improve the efficiency of the membrane separation process. Although extensive studies are reported, 2D-M-TFN membranes for water treatment are not systemically reviewed. This work gives an intensive summary of this emerging technology. The function, mechanisms, and common characteristics of various 2D materia...

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Rational Design and Strain Engineering of Nanoporous Boron Nitride Nanosheet Membranes for Water Desalination

Cited by 109 publications

References 83 publications

Water transport properties of boron nitride nanosheets mixed matrix membranes for humic acid removal

Water transport properties of boron nitride nanosheets mixed matrix membranes for humic acid removal

Highly Efficient Osmotic Energy Harvesting in Charged Boron‐Nitride‐Nanopore Membranes

2D Material Based Thin‐Film Nanocomposite Membranes for Water Treatment

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